Free online time converter
Time is expressed in different units by context — milliseconds in computing, hours in daily life, years in planning. This converter shows every equivalent at once.
Result
—
All units
How to use
- Enter the time value you want to convert.
- Select the unit you are converting from.
- Select the unit you want the result in.
- The converted value appears instantly, and the table below shows equivalents in all supported units.
Conversion reference
| From | To | Multiply by |
|---|---|---|
| Hours | Minutes | 60 |
| Hours | Seconds | 3,600 |
| Days | Hours | 24 |
| Days | Seconds | 86,400 |
| Weeks | Days | 7 |
| Years | Days | 365.2425 |
| Years | Seconds | 31,556,952 |
| Milliseconds | Seconds | 0.001 |
The month and year values use average Gregorian calendar lengths (365.2425 days/year, 30.436875 days/month). For precise calendar arithmetic, use the date difference calculator.
Common durations
| Event | Duration |
|---|---|
| Human heartbeat | ~1 second |
| 9-to-5 workday | 8 hours = 480 minutes |
| Standard work week | 40 hours = 2,400 minutes |
| Month (average) | ~730 hours |
| Year (average) | 8,766 hours = 525,960 minutes |
Notes
- Month conversions use the average Gregorian month (365.2425 ÷ 12 days). Actual month lengths vary from 28 to 31 days.
- Year conversions use 365.2425 days to account for the leap year cycle.
- Results are rounded to 6 decimal places.
Frequently asked
How many seconds are in a day?
86,400 seconds. A day is 24 hours × 60 minutes × 60 seconds = 86,400 seconds.
How many seconds are in a year?
About 31,556,952 seconds, using the average Gregorian year of 365.2425 days. A non-leap year has 31,536,000 seconds; a leap year has 31,622,400.
How many minutes are in a week?
10,080 minutes. A week is 7 days × 24 hours × 60 minutes = 10,080 minutes.
How long is a month in seconds?
About 2,629,746 seconds, based on the average Gregorian month (365.2425 days ÷ 12). Individual months range from 28 to 31 days.
How many milliseconds are in a second?
1,000 milliseconds exactly. Milliseconds are common in computing, networking, and precise timing applications.
How do you convert hours to minutes?
Multiply by 60. Example: 2.5 hours × 60 = 150 minutes. To reverse, divide minutes by 60.
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